Moonbeams Didn't mean to necessarily come across as blunt but the problem is that people have skirted around or ignored it for so long, it's no good being anything other than blunt. If Attenborough is saying it, people need to listen.
The problem is that humans are a generally very selfish species. I don't pretend to be an eco warrior, but I'm 45 and it's been clear since I was a child that we as a species have fucked the planet. We've killed off untold species of animal and are still doing so, because we think we've got a right to exist. We have no more right to exist than anything else on this planet.
People talk about "we need to keep having children to look after us in our old age and to ensure the future of the species". We are in NO danger of dying out as my previous figures show. But even if we did, so what?
I once got stopped by a Greenpeace chugger spouting forth doing the "isn't is dreadful what we're doing to the world, what planet are we leaving for our children?" And I said "How many do you have?" And he said "Four". So I replied, truthfully, "I have none, and I think it's bloody hypocritical and irresponsible of you to have four if you supposedly give a damn about our planet". He was gobsmacked.